Subaru BRZ (2019 year). Manual - part 25

390

4-3. Do-it-yourself maintenance

BRZ_U

■

Use a CR2016 (vehicles without a keyless access with push button
start system) or CR2032 (vehicles with a keyless access with push but-
ton start system) lithium battery

●

Batteries can be purchased at your SUBARU dealer, local electrical
appliance shops or camera stores.

●

Replace only with the same or equivalent type recommended by the
manufacturer.

●

Dispose of used batteries according to local laws.

■

If the key battery is depleted

The following symptoms may occur:

●

The keyless access with push button start system (if equipped) and
remote keyless entry system will not function properly.

●

The operational range will be reduced.

■

When putting the module back (vehicles without a keyless access with
push button start system)

WARNING

■

Removed battery and other parts

Keep away from children. These parts are small and if swallowed by a child,
they can cause choking. Failure to do so could result in death or serious
injury.

Insert the module from directly above.
Inserting it on an angle may prevent the
key buttons from operating properly.

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CAUTION

■

For normal operation after replacing the battery

Observe the following precautions to prevent accidents:

●

Always work with dry hands. 
Moisture may cause the battery to rust.

●

Do not touch or move any other component inside the remote control.

●

Do not bend either of the battery terminals.

■

Precaution before replacing the battery

Before replacing the battery, touch a metallic object to remove any static
electricity from your body.

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4-3. Do-it-yourself maintenance

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Checking and replacing fuses

If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.

Vehicles without a keyless access with push button
start system
Turn the engine switch off.

Vehicles with a keyless access with push button start
system
Turn the push-button ignition switch off. 
Open the fuse box cover. 

Engine compartment

Push the tabs in and lift the lid
off.

Instrument panel

Remove the lid.

STEP 

1 

STEP 

2 

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After a system failure, see “Fuse layout and amperage rat-
ings” (

→P. 395) for details about which fuse to check.

Remove the fuse with the pull-
out tool.

Check if the fuse has blown.

Type A

Normal fuse
Blown fuse

Replace it with one of an
appropriate amperage rating.
The amperage rating can be
found on the fuse box lid.

Type B

Normal fuse
Blown fuse

Replace it with one of an
appropriate amperage rating.
The amperage rating can be
found on the fuse box lid.

STEP 

3 

STEP 

4 

STEP 

5 

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Type C

Normal fuse
Blown fuse

Contact your SUBARU dealer.

Type D

Normal fuse
Blown fuse

Contact your SUBARU dealer.

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Fuse layout and amperage ratings

■

Engine compartment

Fuse

Ampere

Circuit

1

MIR HTR

7.5 A

Outside rear view mirror defoggers

2

RDI

25 A

Electric cooling fan

3

(PUSH-AT)

7.5 A

Engine control unit

4

ABS NO. 1

40 A

ABS

5

HEATER

50 A

Air conditioning system

6

WASHER

10 A

Windshield washer

7

WIPER

30 A

Windshield wipers

8

RR DEF

30 A

Rear window defogger

9

(RR FOG)

10 A



10

D FR DOOR

25 A

Power window (driver’s side)

11

(CDS)

25 A

Electric cooling fan

12

D-OP

25 A



13

ABS NO. 2

25 A

ABS

14

D FL DOOR

25 A

Power window (passenger’s side)

15

SPARE

See note.

Spare fuse

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4-3. Do-it-yourself maintenance

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16

SPARE

See note.

Spare fuse

17

SPARE

See note.

Spare fuse

18

SPARE

See note.

Spare fuse

19

SPARE

See note.

Spare fuse

20

SPARE

See note.

Spare fuse

21

ST

7.5 A

Starting system

22

ALT-S

7.5 A



23

(STR LOCK)

7.5 A

Steering lock system

24

D/L

20 A

Power door lock

25

ETCS

15 A

Engine control unit

26

(AT+B)

7.5 A

Transmission

27

(AM2 NO. 2)

7.5 A

Keyless access with push button 
start system

28

EFI (CTRL)

15 A

Engine control unit

29

EFI (HTR)

15 A

Multiport fuel injection system/
sequential multiport fuel injection 
system

30

EFI (IGN)

15 A

Starting system

31

EFI (+B)

7.5 A

Engine control unit

32

HAZ

15 A

Turn signal lights, hazard warning 
flashers

33

MPX-B

7.5 A

Automatic air conditioning system, 
gauge and meters

34

F/PMP

20 A

Multiport fuel injection system/
sequential multiport fuel injection 
system

35

IG2 MAIN

30 A

SRS airbag system, engine control 
unit

36

DCC

30 A

Interior light, remote keyless entry 
system, main body ECU

Fuse

Ampere

Circuit

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Note

One of each of the following spare fuses are provided: 7.5 A, 10 A, 15
A, 20 A, 25 A, 30 A.

37

HORN NO. 2

7.5 A

Horn

38

HORN NO. 1

7.5 A

Horn

39

H-LP LH LO

15 A

Left-hand headlight (low beam)

40

H-LP RH LO

15 A

Right-hand headlight (low beam)

41

H-LP LH HI

10 A

Left-hand headlight (high beam)

42

H-LP RH HI

10 A

Right-hand headlight (high beam)

43

INJ

30 A

Multiport fuel injection system/
sequential multiport fuel injection 
system

44

H-LP WASHER

30 A



45

AM2 NO. 1

40 A

Starting system, engine control unit

46

EPS

80 A

Electric power steering

47

A/B MAIN

15 A

SRS airbag system

48

ECU-B

7.5 A

Remote keyless entry system, 
main body ECU

49

DOME

20 A

Interior light

50

IG2

7.5 A

Engine control unit

Fuse

Ampere

Circuit

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Instrument panel

Fuse

Ampere

Circuit

1

ECU ACC

10 A

Main body ECU, outside rear view 
mirrors

2

P/POINT No.2

15 A

Power outlet

3

PANEL

10 A

Illumination

4

TAIL

10 A

Tail lights

5

DRL

10 A

Daytime running light system

6

UNIT IG1

10A



7

STOP

7.5 A

Stop lights

8

OBD

7.5 A

On-board diagnosis system

9

HEATER-S

7.5 A

Air conditioning system

10

HEATER

10 A

Air conditioning system

11

FR FOG LH

10 A

Left-hand front fog light

12

FR FOG RH

10 A

Right-hand front fog light

13

BK/UP LP

7.5 A

Back-up lights

14

ECU IG1

10 A

ABS, electric power steering

15

AM1

7.5 A

Starting system

16

AMP

15 A

Audio system

17

AT UNIT

15 A

Transmission

18

GAUGE

7.5 A

Gauge and meters, keyless access 
with push button start system

19

ECU IG2

10 A

Engine control unit

20

SEAT HTR LH

10 A

Left-hand seat heater

21

SEAT HTR RH

10 A

Right-hand seat heater

22

RADIO

7.5 A

Audio system

23

P/POINT No.1

15 A

Power outlet

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After a fuse is replaced

●

If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. (

→P. 400)

●

If the replaced fuse blows again, have the vehicle inspected by your
SUBARU dealer.

■

If there is an overload in the circuits

The fuses are designed to blow, protecting the wiring harness from damage.

WARNING

■

To prevent system breakdowns and vehicle fire

Observe the following precautions. 
Failing to do so may cause damage, and possibly a fire or injury.

●

Never use a fuse of a higher amperage rating than indicated, or use any
other object in place of a fuse.

●

Always use a genuine SUBARU fuse or equivalent. 

●

Do not modify the fuse or the fuse box.

CAUTION

■

Before replacing fuses

Have the cause of electrical overload determined and repaired by your
SUBARU dealer.

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4-3. Do-it-yourself maintenance

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Light bulbs

You may replace the following bulbs by yourself. The difficulty level
of replacement varies depending on the bulb. If necessary bulb
replacement seems difficult to perform, contact your SUBARU
dealer.

■

Preparing a replacement light bulb
Check the wattage of the light bulb being replaced. (

→P. 497)

■

Front bulb locations

Front side 
marker lights

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Rear bulb locations

■

Inside bulb locations

Back-up lights

License
plate
lights

Interior light

Vanity lights 
(if equipped)

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4-3. Do-it-yourself maintenance

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Replacing light bulbs

■

Front side marker lights

Turn the steering wheel in the
opposite direction of the light to
be replaced.

Turn the steering wheel to a point
that allows your hand to easily fit
between the tire and fender liner.

Remove the clips and partly
remove the fender liner.

To prevent damage to the vehicle,
cover the tip of the screwdriver
with a rag.

Release the light's claw.

Insert the screwdriver into the
hole. While firmly pushing the
screwdriver forward, move it
towards the inside of the vehicle.

To prevent damage to the vehicle,
wrap the tip of the screwdriver
with a tape.

STEP 

1 

STEP 

2 

STEP 

3 

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Pull out the lamp and turn the
lens counterclockwise.

Remove the light bulb.

When installing, reverse the steps listed.

STEP 

4 

STEP 

5 

STEP 

6 

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4-3. Do-it-yourself maintenance

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Back-up lights

Remove the clips.

To prevent damage to the vehicle,
cover the tip of the screwdriver
with a rag.

Turn the bulb base counterclock-
wise.

Remove the light bulb.

When installing, reverse the steps listed.

STEP 

1 

STEP 

2 

STEP 

3 

STEP 

4 

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License plate lights

Remove the trunk lid panel cover
clips and partly remove the trunk
lid panel cover.

To prevent damage to the vehicle,
cover the tip of the screwdriver
with a rag.

Turn the bulb base counterclock-
wise.

Remove the light bulb.

When installing, reverse the steps listed.

STEP 

1 

STEP 

2 

STEP 

3 

STEP 

4